Automatic stock regulator for paper-making machines



Apr. 10, 1923. -]l,45l,659

R. HOCKMAN AUTOMATIC STOCK REGULATOR FOR PAPER MAKING MACHINES FiledSept. 5, 1920 ,5 sheets-sheet l OVERFLOW WITNESSES ATTORNEY Apr. 19,1923.

. R. HOCKMAN AUTOMATIC STOCK REGULATOR FOR PAPER MAKING MACHINES FiledSept.

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R. HOCKMAN AUTOMATIC STOCK REGULATOR FOR PAPER MAKING MACHINES FiledSept. 5, 1920 3 sheets-sheet 3 C 2:5 1/ F 5 I 1 l 1 31 @i i E i i i X a@i "I l I I i l l 1 as; i 1 i I I WITNESSES WM ff WW ATTORNEY PatentedApr.

FEED STATES BUSSEL HOCKMAN, OF LOCK HAVEN, PENNSYLVANIA, ASSIGNOB FONE-THIRD T0 HARRY 1H. WILSON AND ONE-THIRD T0 ELLIS B. SHAFFEIL, BOTHOF LOCK HAVEN,

PENNSYLVANIA.

AUTOMATIC STOCK REGULATOR FOR PAPER-MAKING MACHINES.

Application filed September 3, 1920.

To all whom it may concern Be it known that I, R-UssnL I-IooKMAN,citizen of the United States, residing at Lock Haven, in the county ofClinton and State of Pennsylvania, have invented a new and usefulAutomatic Stock Regulator for Paper-Making Machines, of whichthefollowing is a specification.

This invention has reference to automatic stock regulators forpapermaking machines, and its object is to provide for maintaining the stockin a suitable degree of fluidity, either automatically or manually orboth.

In accordance with the invention there is provided a suitably subdividedtank connected to a stock pump in such mannerthat the stock enters onecompartment of the tank and overflows into another compartment whilewater is admitted to the first compartment for mixture with the stocktherein to thin the latter. Provision is made for causing the stock,should it become too thick, or should it be desired to empty thecompartment, to return to the stock chest.

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompanyingdrawings forming part of this specification, with the understanding,however, that the invention is not confined to any strict conformitywith the showing in the drawings, but may be changed and modified solong as such changes and modifications mark no material departure fromthe salient features of the invention as expressed in the appendedclaims.

In the drawings:

Fig. 1 is a side elevation of a structure embodying the invention.

Fig. 2 is a plan view thereof.

Fig. 3 is a section on the line 8-3 of Fig. 2.

Fig. 4 is a section on the line 4-4t of F ilg. 3. L

ig. 5 is a section on the line 5-5 of Fig. 3, but drawn ona largerscale.

Fig. 6 is an elevation of one of the controlling gates with a portion ofthe tank shown in section.

Serial no. 407,856.

Fig. 7 is. a section on the line 77 of Fig. 6. p

Fig. 8 is a view similar to Fig. 5 but of less extent and illustrating amodification.

Fig. 9 is a section on the line 99 of Fig. 8.

Referring to the drawings there is shown in Fig. l, and associatedfigures, a tank 1 of suitable dimensions and located so that it mayreceive from and return material to a stock chest 2 through a pipe 3from a stock pump of ordinary construction and therefore not shown inthe drawings.

The tank 1 is divided into compartments 4, 5, 6, by upright partitions7, 8, of the same height as the walls of the tank 1. The compartment 6is divided by other partitions 9, 10, respectively, intosub-compartments ll, 12 and 13, the partitions 9 and 10 being of lessheight than the walls of the tank 1 with the partition 9 lower than thepartition 10. a

The sub-compartment 12 is entered at the bottom by the pipe 3 comingfrom the stock pump. The compartment 5 communicates at the bottom with apipe 14 leading tothe screen or screens of the paper making machine andthe compartment 4 is entered at the bottom by a pipe 15 for conveyingwater thereto. Leading from the bottom portion of the sub-compartment 13is a pipe 16 delivering into the stock chest 2. v

The partition 7 has at its lower end an opening 17 controlled by a gate18 capable of being manually raised and lowered by means of a handle 19,the gate being directed by guides 20 fast to the sides of the partition7 The partition 10, at the bottom portion thereof, is provided with anopening or passage 21 controlled by a gate 22 movable between guides 23and controlled by a handle 24. v

Extending across the top of the subcompartment 11 is a strip 25 carryingbracket supports 26 furnished with journal bearings 27 for a shaft 28.At opposite ends of-the shaft 28 are gear wheels 29. 30 respectively,the gear wheel 29 meshing with an upright rack bar 31 having uprightguides fast to the partition 8. Meshing with the gear wheel 30 isanother gear wheel 33 on a stub shaft 3 1 andthis stub-shaft has fastthere to a float 35 so situated that when stock fills thesub-compartments 11 and 12 to a depth where the accumulated stock wouldoverflow the partition 10 into the sub-compartment 13,-the float israised, thereby turn ing the gear wheel 33 ina direction to propel thegear wheel 30 in the opposite direction.

The rack bar 31 mounted between the guides 32 has lugs 36 thereon inspaced relation and alined with each other. These lugs are traversed bya rod 37 held to one of the lugs by. collars 38 so that the rod may beturned in the lugs but will not move lengthwise therethrough. At theupper end, the rod 37 is provided with a manipulating wheel 39 and atthe lower end has a screw threaded portion 10 extending below the lowerend of (the rack bar 31.

Below the rack bar is a gate 41 movable between the guides 32 andarranged to open and close a passage 42at the lower end of the partition8 to provide controllable comm'unication between the compartment 5 andthe sub-compartment 11. By means of the rod 37 the relation of the gate11 to the passage 42 may be varied at will so that the effective size 01th?) passage from the compartment 5 to the sub-compartment 11 may becorrespondingly varied at the Will of the operator.

Instead of providing the rack bar driving gearing shown in Fig. 1 andassociated figures, the driving gearing of Figs. 8 and 9 furnishes amore delicate adjustment. In the last named structure the shaft 28carries'aworm gear e3 meshing with a worm 44 carrying at one end thegear wheel 29 engaging the rack bar 31.

The paper stock used in the paper malt ing machine is pumped from thestock chest 2 through the pipe 3, into the sub-compartment 12.

Ultimately the height of the stock in the sub-compartment 12 reaches thetop of the partition 9 and overflows it into the subcompartment 11, fromwhence the paper stock finds its way into the compartment 5 meetingwater. The water first enters the compartment 4: by way of the pipe 15then enters the compartment 5 through the assage 17 and controlled bythe gate 13. be water and paper stock mix in the compartment5 and thenpass by way of a pipe 14 to the screen or screens (not shown) of thepaper making machine.

Ultimately the paper stock entering the mixing and distributing tank 1may become thick and may accumulate in the sub-compartment 11 to such anextent as finally to reach the float 35 and raise the latter. This thickstock automatically acts upon the gate 41 through the float 35 with theresult that the outflow oi? paper stock to the mixing chamber 5 islessened so that the mixture passing through the pipe 14 iscorrespondingly thinned.

By means of the automatically controlled feed of the paper stock to themixing cham ber and the manual control of Water to the mixing chamber itis possible to provide a desirable dilution or thinning of the paperstock passing the screen or screens of the paper making machine. Shouldthe flow of the paper stock into the sub-compartment 12 becomesufiiciently abundant it will ultimately rise over the partition 10 andpass into the sub-compartment 13 to return to) the stock chest 2 by wayof the pipe 16. Such overflow maybe avoided by a. suitable opening ofthe gate '22 which ordinarily remains closed.

At times it becomes advisable to clean out the tank 1, whereupon byasuitab'le manipulation oi the different gates, the stock in the tank 1may be directed from the several compartments and sub-compartments tothe sub-compartment 13 by opening the (gate- 22 and permitting thematerial to find its Way to the pipe 16 and back tothe stock chest 2.

What is claimed is:

1. An automatic stock regulator for paper making machines, comprising areceptacle for receiving the stock and delivering it to the paper makingmachine, said receptacle having compartments, one into which the stockis delivered, another into which wateris delivered, and anotherintermediate of the first two compartments and constituting a mixing anddelivering chamber, and means for controlling the access of water and ofstock to the mixing compartment from the other two compartments.

2. An automatic stock regulatoriorpap'er making machines, comprising atank or receptacle with a compartment therein having partitions ofdifferent heights dividing it into sub-compartments, a pipecommunicating with the intermediate one of "the subcompartments fordelivering paper stock thereinto, a valve structure in another one ofthe sub-compartments andhaving means responsive to a rising level ofpaper stock in the sub-compartment to which it belongs, and a pipecommunicating with-still another one of the sub-compartments for"disposing of overflow reaching said sub-compartment.

3. An automatic stock regulator'for paper making machines, comprising atankdivid'ed into compartments, with one compartment subdivided intoother compartments, 'one 'ot the sub-compartments having means 'fordirecting paper stock therein'to, another one of the sub-compartmentshaving means for directing thereinto paper'sto'ck "from the firstcompartment, and a third compartment having means for the overflow ofthe paper stock thereinto from the first compartment, another of thecompartments in the tank having means for introducing water thereinto,and an intermediate compartment in the tank communicating with the firstand second compartments to provide a mixing chamber for paper stock andwater.

4:. An automatic stock regulator for paper making machines, comprising atank divided into compartments, with one compartment sub-divided intoother compartments, one oi the sub-compartments having means fordirecting paper stock thereinto, another one of the sub-compartmentshaving means for directing thereinto paper stock from the firstcompartment and a third sub-compartment having means for the overflow ofthe paper stock thereinto from the first compartment, another of thecompartments in the tank having means for introducing water there into,and an intermediate compartment in the tank communicating with the firstand second compartments to provide a mixing chamber for paper stock andwater, the second named sub-compartment having automatic meansassociated therewith for causing the flow of paper stock therefrom tothe mixing compartment.

5. In an automatic stock regulator for paper making machines a tankdivided into a series of main compartments with one of the maincompartments having partitions of different heights dividing it intosub-compartments all rising from the bottom of the tank, an inlet forpaper stock into one of the sub-compartments, a. valved outlet :"rorpaper stock between another one of the subcompartments and one of themain compartments, a water feed for another one of the maincompartments, a valve between the water compartment and the intermedione of the main compartments, whereby said intermediate compartmentcomprises a mixing chamber for water and paper stock, a

float structure and valve between one of the sub-compartments and theintermediate main or mixing compartment to automatically regulate theflow or" paper stock fed to the intermediate main compartment, a valvestructure between the sub-compartment receiving the paper stock and thesub-compartment remote from that having the iioat structure, and anoverflow pipe for disposing of paper stock entering the last named oneor" the sub-compartments.

6. in an automatic stock regulator for paper making machines, a tank forreceiving and delivering paper stock, said tank having compartmentstherein with one of the compartments sub-divided into othercompartments, pipes leading into the bottoms of the several compartmentsfor supplying stock, supplying water, and disposing of overflow, andgates constituting valves for controlling the flow of material from onecompartment to another, all of said gates being located to affordcommunication between the lower ends of the compartments.

7. In an automatic stock regulator for paper making machines, a tank forreceiving and delivering paper stock, said tanks having compartmentstherein, with one of the compartments subdivided into othercompartments, pipes leading into the lower ends of the compartments forsupplying stock, delivering stock, supplying water, and disposing ofoverflow, and certain of the compartments having gates constitutingvalves, said gates being all located to communicate with the lower endsof the compartments, one of the gates having automatic controlling meansresponsive to rising level of paper stock of a predetermined density insaid compartment, and the other gates having manual controlling means.

In testimony, that I claim the foregoing as my own, I have heretoatfixed my signature.

RUSSEL HOCKMAN.

